What is the equation for resistance?

The equation for resistance can be expressed as R = V/I, which shows how resistance (R) is calculated by dividing the voltage (V) across a component by the current (I) flowing through it. This direct relationship highlights that resistance is a measure of how much a material opposes the flow of electric current.

Understanding this equation is fundamental in electrical engineering and physics because it enables the analysis of circuits. In a circuit, if you know the voltage and the current, you can easily determine the resistance of components within the circuit.

Ohm's Law, which is often illustrated with the formula R = V/I, is key to solving various problems related to electrical circuits, ensuring that students grasp the core concepts of electricity and how it behaves in different scenarios. The other equations listed illustrate different aspects of electrical relationships but do not specifically define resistance in the same way.